Magneto-electric motor.



No. 652,952. Patented July 3, I900.

E. m. & m. N. ANDREWS & c. m. CONGEB.

MAGNETO ELECTRIC MOTOR.

(Application filed May 10, 1900.)

(No Model.)

v1'm: NORRIS PETERS cov PHOTO-LITNO., WASHINGTON. a. c.

UNITED STATES EVERETT M. ANDREWS AND MELVIN N. ANDREI/VS, OF DES MOINES,

CHARLES M. OONGER, OF'ADEL, IOWA.

PATENT Qrricn.

AND

MAGNETO-ELECTRIC MOTOR.

SPECIFICATION forming part of Letters Patent No. 652,952, dated July 3,1900.

Application filed May 10, 1900.

To all whom it may concern:

Be it known that we, EVERETT M. ANDREWS and MELVIN N. ANDREWS, residingat Des Moines, in the county of Polk, and CHARLES M. CONGER, residing atAdel, in the county of Dallas, State of Iowa, citizens of the UnitedStates, have invented certain new and useful Improvements in Mag-neto-Electric Motors, of which the following is a specification.

The objects of this invention are to provide a motor of this class ofsimple, durable, and inexpensive construction in which a maximumefliciency is attained for operating the motor from an electric currentof given quantity; further, to provide a magnetic field so constructedthat practically all of its force is utilized in driving the armatureand almost none permitted to escape or be lost by passing through theair between the poles, and, further, to provide a field so constructedthat the power of the magnets is retained in them for a maximum lengthof time, such-as would be the case where a keeper was provided for apermanent magnet.

Our invention consists, essentially, in the construction and arrangementof a perma nent magnetic field in which the poles are directly connectedto form a continuous circuit through the field and to completelyencircle the armature and in the combination therewith of a rotatingarmature and accompanyin g parts of a motor, whereby the objectscontemplated are attained, as hereinafter more fully set forth, pointedout in our claims, and illustrated in the accompanying drawings, inwhich Figurel shows an end elevation of the complete motor. Fig. 2 showsa vertical central longitudinal sectional view of same.

Referring to the accompanying drawings, We have used thereference-numeral 10 to indicate the base of the machine. This base iscomposed of insulating material, so as to prevent the escape of themagnetic force from the magnets. Mounted upon the base are the uprights11, of ordinary construction, supporting a rotatable shaft 12. Mountedupon the central portion of the shaft is an armature (indicated by thereference-numeral 13) and wound in' the ordinary manner. At one end ofthe armature is a commutator 14, also $erial No. 16,175. (No model.)

of ordinary construction. Supported adjacent to the commutator are twobrushes 15 in electrical contact with the commutator. The binding-posts16 are attached to the base, and the wires 17 connect them with thebrushes.

Upon the central portion of the base we have mounted a block ofinsulating material 18, and fixed to this block are two series ofpermanent horseshoe-magnets 19, which are preferably separated from eachother in each series, and the ends of the magnets are broughtapproximately together on field-pieces which are directly under andabove the center of the shaft, the positive poles of one series ofmagnets being arranged adjacent to the negative poles of the oppositeseries. The adjacent ends of the magnets are connected by means of thefield-pieces 20, the surfaces of said field-pieces adjacent to thearmature being concave to conform to the contour of the armature, andsaid field-pieces are of a length corresponding to the length of thearmature.

In practical use it has been found that by constructing the field in themanner shown and described a current of electricity of given quantitypassed through the armature will cause the shaft to be rotated with aspeed and power considerably in excess of the speed and power that wouldbe attained if all of the magnets were placed on one side of the motorand the poles of the magnets disconnected.

We are aware that electric generators have been used heretofore in whicha field was made of permanent magnets; but we are not aware thatpermanent field-magnets have ever been arranged in a continuous circuitin the manner shown and described, and the greatly-increased efficiencyof our machine over that of the ordinary motor having an electromagnetic9o field is due to the arrangement of the permanent magnets in acomplete circuit, with their poles magnetically connected.

We claim as our invention 1. In a magneto-electric motor, thecombination of two or more series of permanent magnets, arranged toencircle the armature, and having the opposite poles of the adjacentseries of magnets, magnetically connected.

2. In a magneto-electric motor, the combi- IOO nation of two or moreseries of permanent magnets arranged to encircle the armature,

having the opposite poles of the adjacent sepieces with their innersurfaces concave to ries of magnets magnetically connected, and conformto the contour of the armature magmeans for insulating said magnets fromthe netically connected with the adjacent poles base. of the magnets,substantially as, and for the 15 3. In a magneto-electric motor, theeombipurposes stated.

nation of a base made of insulated material, EVERETT M. ANDREWS. twoseries of horseshoe-magnets supported MELVIN N. ANDREWS. above the base,arranged in a complete cir- CHARLES M. CONGER.

cuit around the armature, and having the Witnesses:

positive poles of one series adjacent to the ALEXANDER FITZHUGH,

negative poles of the other series, and field- J RALPH ORWIG.

